tire size CADILLAC XLR 2008 1.G User Guide

Buying New Tires
GM has developed and matched specic tires for your
vehicle. The original equipment tires installed on
your vehicle, when it was new, were designed to meet
General Motors Tire Performance Criteria Specication
(TPC Spec) system rating. If you need replacement
tires, GM strongly recommends that you get tires with
the same TPC Spec rating. This way, your vehicle
will continue to have tires that are designed to give the
same performance and vehicle safety, during normal
use, as the original tires.
GM’s exclusive TPC Spec system considers over a
dozen critical specications that impact the overall
performance of your vehicle, including brake system
performance, ride and handling, traction control, and tire
pressure monitoring performance. GM’s TPC Spec
number is molded onto the tire’s sidewall near the tire
size. If the tires have an all-season tread design,
the TPC Spec number will be followed by an MS for
mud and snow. SeeTire Sidewall Labeling on
page 6-54, for additional information.
GM recommends replacing tires in sets of four. This is
because uniform tread depth on all tires will help
keep your vehicle performing most like it did when the
tires were new. Replacing less than a full set of tires can
affect the braking and handling performance of your
vehicle. SeeTire Inspection and Rotation on page 6-65.Winter tires with the same speed rating as your original
equipment tires may not be available for H, V, W, Y
and ZR speed rated tires. If you choose snow tires with
a lower speed rating, never exceed the tire’s maximum
speed capability.
{CAUTION:
Mixing tires could cause you to lose control
while driving. If you mix tires of different sizes
(other than those originally installed on your
vehicle), brands, or types (radial and bias-belted
tires), the vehicle may not handle properly, and
you could have a crash. Using tires of different
sizes (other than those originally installed on
your vehicle), brands or types, may also cause
damage to your vehicle. Be sure to use the
correct size, brand, and type tires on all
four wheels.
6-67

{CAUTION:
If you use bias-ply tires on your vehicle,
the wheel rim anges could develop
cracks after many miles of driving. A tire
and/or wheel could fail suddenly, causing
a crash. Use only radial-ply tires with the
wheels on your vehicle.
If you must replace your vehicle’s tires with those that
do not have a TPC Spec number, make sure they
are the same size, load range, speed rating, and
construction type (radial and bias-belted tires) as your
vehicle’s original tires.
Vehicles that have a tire pressure monitoring system
could give an inaccurate low-pressure warning if
non-TPC Spec rated tires are installed on it. Non-TPC
Spec rated tires may give a low-pressure warning that is
higher or lower than the proper warning level you
would get with TPC Spec rated tires. SeeTire Pressure
Monitor System on page 6-61.
Your vehicle’s original equipment tires are listed on the
Tire and Loading Information label. SeeLoading
Your Vehicle on page 5-22, for more information about
the Tire and Loading Information label and its location
on your vehicle.
Different Size Tires and Wheels
If you add wheels or tires that are a different size than
your original equipment wheels and tires, this may
affect the way your vehicle performs, including its
braking, ride and handling characteristics, stability, and
resistance to rollover. Additionally, if your vehicle
has electronic systems such as, anti-lock brakes,
traction control, and electronic stability control, the
performance of these systems can be affected.
{CAUTION:
If you add different sized wheels, your vehicle
may not provide an acceptable level of
performance and safety if tires not
recommended for those wheels are selected.
You may increase the chance that you will
crash and suffer serious injury. Only use GM
specic wheel and tire systems developed for
your vehicle, and have them properly installed
by a GM certied technician.
SeeBuying New Tires on page 6-67andAccessories
and Modifications on page 6-3for additional information.
6-68

Used Replacement Wheels
{CAUTION:
Putting a used wheel on your vehicle is
dangerous. You cannot know how it has been
used or how far it has been driven. It could fail
suddenly and cause a crash. If you have to
replace a wheel, use a new GM original
equipment wheel.
Tire Chains
{CAUTION:
Do not use tire chains. There is not enough
clearance. Tire chains used on a vehicle
without the proper amount of clearance can
cause damage to the brakes, suspension, or
other vehicle parts. The area damaged by the
tire chains could cause you to lose control of
your vehicle and you or others may be injured
in a crash. Use another type of traction device
only if its manufacturer recommends it for use
on your vehicle and tire size combination and
road conditions. Follow that manufacturer’s
instructions. To help avoid damage to your
vehicle, drive slowly, re-adjust or remove the
device if it is contacting your vehicle, and do
not spin your wheels. If you do nd traction
devices that will t, install them on the
rear tires.
6-73

Service (cont.)
California Pershlorate Materials Requirements . . . 6-4
California Proposition 65 Warning.................... 6-3
Doing Your Own Work................................... 6-4
Engine Soon Light.......................................3-54
Publications Ordering Information...................8-16
Service, Scheduling Appointments.....................8-10
Servicing Your Airbag-Equipped Vehicle..............1-50
Setup Menu...................................................4-13
Sheet Metal Damage.......................................6-86
Shifting Into Park (P).......................................2-32
Shifting Out of Park (P)...................................2-33
Signals, Turn and Lane-Change.......................... 3-8
Six-Disc CD Changer......................................4-67
Specications, Capacities.................................6-97
Speedometer..................................................3-45
StabiliTrak
®System.......................................... 5-8
Starting the Engine.........................................2-24
Steering.......................................................... 5-9
Steering Wheel Controls, Audio.........................3-82
Steering Wheel Controls, Memory....................... 1-3
Steering Wheel, Heated..................................... 3-7
Steering Wheel, Power Tilt Wheel and
Telescopic Steering Column............................ 3-7
Storage Areas
Center Console Storage Area........................2-52
Convenience Net.........................................2-53
Cupholder(s)...............................................2-52
Glove Box..................................................2-52
Rear Storage Area.......................................2-53Storage Areas (cont.)
Stuck in Sand, Mud, Ice, or Snow.....................5-21
Sun Visors.....................................................2-19
Symbols........................................................4-44
System Needs Service, If.................................4-52
System Overview
Overview, Navigation System.......................... 4-2
T
Tachometer....................................................3-45
TCS Warning Light..........................................3-52
Telescopic Steering Column, Power Tilt Wheel...... 3-7
Theft-Deterrent, Radio.....................................3-82
Theft-Deterrent System....................................2-19
Theft-Deterrent Systems...................................2-19
Immobilizer.................................................2-21
Immobilizer Operation...................................2-22
Tire
Pressure Light.............................................3-53
Tires.............................................................6-52
Aluminum or Chrome-Plated Wheels,
Cleaning.................................................6-85
Buying New Tires........................................6-67
Chains.......................................................6-73
Cleaning....................................................6-86
Different Size..............................................6-68
If a Tire Goes Flat.......................................6-78
Ination - Tire Pressure................................6-60
12

V
Valet Lockout Switch.......................................2-21
Vehicle
Control........................................................ 5-3
Damage Warnings............................................ v
Loading......................................................5-22
Symbols......................................................... v
Vehicle Data Recording and Privacy..................8-17
Vehicle Identication
Number (VIN).............................................6-89
Service Parts Identication Label...................6-89
Vehicle Personalization
DIC ...........................................................3-76
Vehicle Positioning..........................................4-51
Ventilation Adjustment......................................3-42
Visors...........................................................2-19
Voice Recognition...........................................4-76
Voltmeter Gage..............................................3-50
W
Warning Lights, Gages and Indicators................3-43
Warnings
DIC Warnings and Messages........................3-63
Hazard Warning Flashers............................... 3-6
Other Warning Devices.................................. 3-6
Safety and Symbols......................................... iv
Vehicle Damage............................................... vWasher, Headlamps........................................3-12
Waypoint, Edit................................................4-24
Wheels
Alignment and Tire Balance..........................6-70
Different Size..............................................6-68
Replacement...............................................6-70
Windows.......................................................2-16
Power........................................................2-17
Windshield
Rainsense™ Wipers.....................................3-11
Replacement...............................................6-50
Washer......................................................3-12
Washer Fluid..............................................6-36
Wiper Blade Replacement.............................6-50
Wiper Blades, Cleaning................................6-85
Wiper Fuses...............................................6-90
Wipers.......................................................3-10
Winter Driving................................................5-17
Winter Tires...................................................6-53
Wiper Activated Headlamps..............................3-29X
XM™ Satellite Radio Antenna System................3-85
Y
Your Vehicle and the Environment....................... 7-2
14